Robotics - There's a ton of work happening on robotics (e.g Anybots) and robots with greater and greater degree of autonomy are being deployed. Robots in warfare is a topic of particular interest to me. think warfare is going to get an order of magnitude more horrendous (hard as it may be to imagine that)
In a matrix-related vein powered exoskeleton technology is becoming good/cheap. A reasonable way to prevent brain injuries from getting rattled around by an IED is to make yourself REALLY heavy and then power it so you don't get really tired walking around on patrol (i.e. powered armored exoskeleton)
Speaking of horrendous there's also those supposedly non-lethal ray guns they are testing on journalists holding mattresses.
